SIST EN 61010-2-010:2015
(Main)Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of materials (IEC 61010-2-010:2014)
Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of materials (IEC 61010-2-010:2014)
This clause of Part 1 is applicable except as follows:
1.1.1 Equipment included in scope
Replacement:
This part of IEC 61010 specifies safety requirements for electrically powered laboratory
equipment for the heating of materials, where the heating of materials is one of the functions
of the equipment.
NOTE If all or part of the equipment falls within the scope of one or more other part 2 standards of IEC 61010 as
well as within the scope of this standard, it will also need to meet the requirements of those other part 2 standards.
In particular, if equipmen is intended to be used for IVD purposes, it will need to meet the requirements of
IEC 61010-2-101.
1.1.2 Equipment excluded from scope
Addition after item j):
aa) equipment for the heating and ventilation of laboratories;
bb) sterilizing equipment;
cc) heating and/or cooling equipment which the OPERATOR is intended to enter, and which is
large enough for the OPERATOR to remain inside with the door or doors closed.
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-010: Besondere Anforderungen an Laborgeräte für das Erhitzen von Stoffen (IEC 61010-2-010:2014)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-010: Exigences particulières pour appareils de laboratoire utilisés pour l’échauffement des matières (CEI 61010-2-010:2014)
L'IEC 61010-2-010:2014 spécifie les exigences de sécurité relatives aux appareils de laboratoire alimentés électriquement pour l'échauffement des matières, où l'échauffement des matières est l'une des fonctions de l'appareil. Cette troisième édition annule et remplace la deuxième édition publiée en 2003. Elle constitue une révision technique et inclut les modifications majeures suivantes par rapport à la deuxième édition, ainsi que de nombreuses autres modifications:
- ajout d'une définition pour MOYEN DE TRANSFERT DE CHALEUR à l'Article 3;
- ajout d'un symbole pour LIQUIDE INFLAMMABLE au Tableau 1 de l'Article 5;
- ajout d'une exigence relative aux instructions concernant la ventilation à l'Article 5;
- modification des exigences relatives au préconditionnement à l'humidité dans l'Article 6;
- ajout d'exigences relatives aux appareils contenant ou utilisant des liquides inflammables à l'Article 9;
- ajout d'exigences relatives aux dispositifs de protection contre les surtempératures à l'Article 10.
Elle a le statut de publication groupée de sécurité, conformément au Guide 104 de l'IEC.
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-010. del: Posebne zahteve za laboratorijsko opremo za gretje materialov (IEC 61010-2-010:2014)
Ta točka 1. dela se ne uporablja v naslednjih primerih:
1.1.1 Oprema, zajeta v področje uporabe
Nadomestitev:
Ta del standarda IEC 61010 določa varnostne zahteve za električno laboratorijsko opremo za gretje materialov, pri kateri je gretje materialov ena od funkcij opreme.
OPOMBA Če vsa oprema ali njen del sodi v okvir enega ali več drugih delov standarda IEC 61010 in v okvir tega standarda, bo morala zadostiti tudi zahtevam teh drugih delov standardov.
Še zlasti oprema, ki je namenjena za diagnostično opremo in vitro (IVD), bo morala izpolnjevati zahteve standarda IEC 61010-2-101.
1.1.2 Oprema, izključena iz področja uporabe
Dodatek po točki j):
aa) oprema za ogrevanje in prezračevanje laboratorijev;
bb) oprema za sterilizacijo;
cc) oprema za ogrevanje/hlajenje, v katero UPRAVLJAVEC vstopi in je dovolj velika, da UPRAVLJAVEC ostane v njej pri zaprtih vratih.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.UDWRULMVNRRègles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-010: Exigences particulières pour appareils de laboratoire utilisés pour l’échauffement des matières (CEI 61010-2-010:2014)Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of materials (IEC 61010-2-010:2014)71.040.10Kemijski laboratoriji. Laboratorijska opremaChemical laboratories. Laboratory equipment19.080SUHVNXãDQMHElectrical and electronic testingICS:Ta slovenski standard je istoveten z:EN 61010-2-010:2014SIST EN 61010-2-010:2015en01-marec-2015SIST EN 61010-2-010:2015SLOVENSKI
STANDARDSIST EN 61010-2-010:20041DGRPHãþD
SIST EN 61010-2-010:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 61010-2-010
November 2014 ICS 19.080; 71.040.20
Supersedes EN 61010-2-010:2003
English Version
Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of Materials (IEC 61010-2-010:2014)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-010: Exigences particulières pour appareils de laboratoire utilisés pour l'échauffement des matières (CEI 61010-2-010:2014)
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-010: Besondere Anforderungen an Laborgeräte für das Erhitzen von Stoffen (IEC 61010-2-010:2014) This European Standard was approved by CENELEC on 2014-10-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61010-2-010:2014 E SIST EN 61010-2-010:2015
EN 61010-2-010:2014 - 2 - Foreword The text of document 66/532/FDIS, future edition 3 of IEC 61010-2-010, prepared by IEC/TC 66 "Safety of measuring, control and laboratory equipment" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61010-2-010:2014.
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-07-30 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-10-30
This document supersedes EN 61010-2-010:2003.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice The text of the International Standard IEC 61010-2-010:2014 was approved by CENELEC as a European Standard without any modification. SIST EN 61010-2-010:2015
- 3 - EN 61010-2-010:2014 Annex ZA (normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu
Publication Year Title EN/HD Year Annex ZA of EN 61010-1:2010 is applicable except as follows:
Addition: ISO 7010 2011 Graphical symbols - Safety colours and safety signs - Registered safety signs EN ISO 7010 2012
SIST EN 61010-2-010:2015
SIST EN 61010-2-010:2015
IEC 61010-2-010 Edition 3.0 2014-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Safety requirements for electrical equipment for measurement, control and laboratory use –
Part 2-010: Particular requirements for laboratory equipment for the heating of materials
Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire –
Partie 2-010: Exigences particulières pour appareils de laboratoire utilisés pour l’échauffement des matières
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 19.080, 71.040.20 PRICE CODE CODE PRIX ISBN 978-2-8322-1867-9
GROUP SAFETY PUBLICATION PUBLICATION GROUPÉE DE SÉCURITÉ
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. SIST EN 61010-2-010:2015 colourinside
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CONTENTS FOREWORD . 3 1 Scope and object . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Tests . 7 5 Marking and documentation . 7 6 Protection against electric shock . 10 7 Protection against mechanical HAZARDS . 12 8 Resistance to mechanical stresses . 12 9 Protection against the spread of fire . 13 10 Equipment temperature limits and resistance to heat . 13 11 Protection against HAZARDS from fluids . 15 12 Protection against radiation, including laser sources, and against sonic and ultrasonic pressure . 15 13 Protection against liberated gases and substances, explosion and implosion . 15 14 Components and subassemblies . 16 15 Protection by interlocks . 17 16 HAZARDS resulting from application . 17 17 RISK Assessment . 17 Annexes . 17 Bibliography . 18
Table 1 – Symbols . 7 Table 101 – Time-temperature conditions . 15
SIST EN 61010-2-010:2015
IEC 61010-2-010:2014 © IEC 2014 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL AND LABORATORY USE –
Part 2-010: Particular requirements for laboratory equipment
for the heating of materials
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61010-2-010 has been prepared by IEC technical committee 66: Safety of measuring, control and laboratory equipment. It has the status of a group safety publication in accordance with IEC Guide 104. This third edition cancels and replaces the second edition published in 2003. It constitutes a technical revision and includes the following significant changes from the second edition, as well as numerous other changes: • added a definition for HEAT TRANSFER MEDIUM to Clause 3;
• added a symbol for FLAMMABLE LIQUID to Table 1 in Clause 5; • added a requirement for instructions pertaining to ventilation in Clause 5; • modified the requirements for humidity preconditioning in Clause 6; SIST EN 61010-2-010:2015
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• added requirements for equipment containing or using flammable liquids to Clause 9; • added requirements for over-temperature protection devices to Clause 10. The text of this standard is based on the following documents: FDIS Report on voting 66/532/FDIS 66/543/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61010 series, under the general title: Safety requirements for electrical equipment for measurement, control, and laboratory use, may be found on the IEC website. This Part 2-010 is intended to be used in conjunction with IEC 61010-1. It was established on the basis of the third edition (2010). This Part 2-010 supplements or modifies the corresponding clauses in IEC 61010-1 so as to convert that publication into the IEC standard Safety requirements for laboratory equipment for the heating of materials. Where a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies as far as is reasonable. Where this part states “addition”, “modification”, “replacement”, or “deletion” the relevant requirement, test specification or note in Part 1 should be adapted accordingly. In this standard: 1) the following print types are used: – requirements: in roman type; – NOTES: in small roman type; – conformity and test: in italic type; – terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN CAPITALS; 2) subclauses, figures, tables and notes which are additional to those in Part 1 are numbered starting from 101. Additional annexes are lettered starting from AA. SIST EN 61010-2-010:2015
IEC 61010-2-010:2014 © IEC 2014 – 5 – The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer.
SIST EN 61010-2-010:2015
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SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL AND LABORATORY USE –
Part 2-010: Particular requirements for laboratory equipment
for the heating of materials
1 Scope and object This clause of Part 1 is applicable except as follows: 1.1.1 Equipment included in scope Replacement: This part of IEC 61010 specifies safety requirements for electrically powered laboratory equipment for the heating of materials, where the heating of materials is one of the functions of the equipment. NOTE If all or part of the equipment falls within the scope of one or more other part 2 standards of IEC 61010 as well as within the scope of this standard, it will also need to meet the requirements of those other part 2 standards. In
particular, if equipmen is intended to be used for IVD purposes, it will need to meet the requirements of IEC 61010-2-101. 1.1.2 Equipment excluded from scope Addition after item j): aa) equipment for the heating and ventilation of laboratories; bb) sterilizing equipment; cc) heating and/or cooling equipment which the OPERATOR is intended to enter, and which is large enough for the OPERATOR to remain inside with the door or doors closed. 2 Normative references This clause of Part 1 is applicable, except as follows: Addition: ISO 7010:2011, Graphical symbols — Safety colours and safety signs — Registered safety signs 3 Terms and definitions This clause of Part 1 is applicable except as follows: 3.2 Parts and accessories Addition: 3.2.101 HEAT TRANSFER MEDIUM medium used to transfer heat to the material being processed SIST EN 61010-2-010:2015
IEC 61010-2-010:2014 © IEC 2014 – 7 – 4 Tests This clause of Part 1 is applicable except as follows: 4.4.2.11 Heating devices Addition:
If a HAZARD could be caused by overfilling or under-filling with a liquid HEAT TRANSFER MEDIUM, the equipment shall be tested when empty, partially filled, or overfilled, whichever is least favourable. In case of doubt, the test shall be carried out in more than one condition. The HEAT TRANSFER MEDIUM used for the test shall be of a type specified for NORMAL USE. 5 Marking and documentation This clause of Part 1 is applicable except as follows: 5.1 Marking Table 1 – Symbols Addition:
Number Symbol Publication Description 101
Background colour – yellow (optional, not green); symbol and outline – black (optional). ISO 7010 – W021 Warning;
Flammable material
5.1.3 MAINS supply Addition to item c): If, for periods of 1 min or less after switching on, the actual power or current can be much higher than the marked maximum RATED power or current, the short-term maximum may be marked in brackets after the maximum RATED power or current. 5.1.6 Switches and circuit-breakers
Addition:
For ovens and similar equipment, there shall be an indication of the “ON” condition on each side of the equipment which has a door in it or has any other opening intended for loading material. 5.2 Warning markings Replacement of the first paragraph by the following: Warning markings specified in 5.1.5.2 c), 5.2.101, 6.1.2 b), 6.1.2.101 2), 7.3.2 b) 3), 7.4, 10.1, 9.5 c), and 13.2.2 shall meet the following requirements: Additional subclause: SIST EN 61010-2-010:2015
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5.2.101 Equipment with high ACCESSIBLE current If the ACCESSIBLE current of the equipment exceeds the limit of 6.3.1 b) or 6.3.2 b) for non-permanently connected equipment, but is within the limit for PERMANENTLY CONNECTED EQUIPMENT, there shall be a warning marking requiring permanent connection to the supply source. The marking shall be on or beside the cover of the TERMINALS for connection to the supply source, and the warning shall be repeated in the installation instructions. Symbol 14 of Table 1 is an adequate warning marking, particularly when it may not be known in which country the equipment will be used and, therefore, in which language it would be appropriate to print the warning marking. Conformity is checked by inspection. 5.4.3 Equipment installation Replacement: The documentation shall include installation and specific commissioning instructions (examples are listed below) and, if necessary for safety, warnings against HAZARDS which could arise during installation or commissioning of the equipment: a) assembly, location and mounting requirements. If a HAZARD could be caused by hot items falling from the equipment, for example when a door is opened, there shall be a warning that the equipment shall not be mounted on a surface of flammable material; b) instructions for protective earthing; c) connections to the supply, including the warning and statement which are necessary when permanent connection to the supply source is essential (see 5.2.101), and for equipment in which HAZARDOUS LIVE parts may need to be ACCESSIBLE (see 6.1.2), a statement requiring the fitting of a residual current-operated circuit-breaker; d) for PERMANENTLY CONNECTED EQUIPMENT: 1) supply wiring requirements; 2) requirements for any external switch or circuit-breaker (see 6.11.2.1) and external overcurrent protection devices (see 9.6.2), and a recommendation that the switch or circuit-breaker be near the equipment; e) ventilation requirements; f) requirements for special services, for example, air, cooling liquid; g) the maximum sound level produced by equipment which emits sound, if measurement is required by 12.5.1; h) instructions relating to sound level (see 12.5.1); i)
any requirement for drying-out (see 5.4.3.101); j) if the heating of materials could lead to liberation of hazardous substances, installation instructions shall warn of any need for an extraction system, additional temperature-limiting devices relating to safe temperatures for the materials, etc. (also see the note to 5.4.1). NOTE An extraction system is a system which removes air from the building, not a recirculating system.
Conformity is checked by inspection. Additional subclause: 5.4.3.101 Drying-out If, after transport or storage in humid conditions, equipment could fail to meet all the safety requirements of this standard, the installation instructions shall specify a period of operation SIST EN 61010-2-010:2015
IEC 61010-2-010:2014 © IEC 2014 – 9 – to dry out the equipment and restore it to NORMAL CONDITION. The instructions shall include a warning that the equipment cannot be assumed to meet all the safety requirements of this standard during the drying-out process. Conformity is checked by inspection. 5.4.4 Equipment operation Addition at the end of item g): (see 5.4.4.101) Addition after item j): aa) specification of additional protection needed by the OPERATOR when HAZARDOUS LIVE parts are permitted to be ACCESSIBLE (see 6.1.2.101); bb) a warning about any possible HAZARDS of explosion, implosion, or the release of toxic or flammable gases arising from the materials being heated (also see 5.4.4 h); cc) specification of HEAT TRANSFER MEDIA which are suitable for use, for example liquids for
use in a heating bath. dd) specific requirements for ventilation. Additional subclause: 5.4.4.101 Cleaning and decontamination The instructions shall include recommendations for cleaning and, where necessary, decontamination, together with the recognized generic names of recommended materials for cleaning and decontamination, and an indication of any materials which could be likely to be used but which are incompatible with parts of the equipment or with material contained in it. The instructions shall also state that the RESPONSIBLE BODY shall ensure that: a) appropriate decontamination is carried out if hazardous material is spilled onto or into the equipment; b) no decontamination or cleaning agents are used which could cause a HAZARD as a result of a reaction with parts of the equipment or with material contained in it; c) the manufacturer or his agent is consulted if there is any doubt about the compatibility of decontamination or cleaning agents with parts of the equipment or with material contained in it. Manufacturers should be aware of the internationally recognized “Laboratory Biosafety Manual”, published by the World Health Organization in Geneva, which gives information on decontaminants, their use, dilutions, properties and potential applications. There are also national guidelines which cover these areas.
Cleaning and decontamination may be necessary as a safeguard when laboratory heating equipment and any accessories are maintained, repaired, or transferred. Manufacturers should provide a format for the RESPONSIBLE BODY to certify that such treatment has been carried out.
Conformity is checked by inspection. 5.4.5 Equipment maintenance and service Addition: SIST EN 61010-2-010:2015
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If high-temperature or other special cable is used for the MAINS supply cord, the instructions shall state that it is to be replaced only by an equivalent cable. If practicable, instructions shall specify methods for the RESPONSIBLE BODY to check the effective operation of devices or systems for over-temperature protection or liquid-level protection which are necessary for safety, and shall state how often the checks need to be made. 6 Protection against electric shock This clause of Part 1 is applicable except as follows:
6.1 General 6.1.1
Addition after the conformity statement: If a drying-out process is specified (see 6.7.2.2.101), this is carried out in accordance with the operator manual (see 5.4.3.101) before making the measurements of 6.3. Drying-out is followed by a rest period of 2h, with the equipment de-energized, before the measurements are taken. Measurements are made with the equipment at ambient temperature. If there is doubt whether the permissible limits could be exceeded at maximum operating temperature, the relevant measurements are repeated at maximum operating temperature and the higher values are used. Additional subclause: 6.1.2.101 Exceptions for ovens and furnaces
HAZARDOUS LIVE parts are permitted to be ACCESSIBLE if efficient operation of an oven or furnace would otherwise be impossible for one or more of the following reasons: a) continuous access is needed (for example, conveyor ovens and tube furnaces); b) ports are needed for observation or for the insertion of probes or sensors; c) it is necessary to maintain a steady operating temperature to prevent thermal shock to materials being treated, and therefore ACCESSIBLE heaters, etc. have to remain energized even when a door is opened. In the above cases, ACCESSIBLE internal parts are permitted to be HAZARDOUS LIVE only if all those of the following conditions that are applicable are met: 1) the HAZARDOUS LIVE parts are supplied from a circuit protected by a residual current operated circuit-breaker which interrupts the supply at a differential current of 30 mA or less, or the installation instructions specify that the equipment shall be connected to a supply source which incorporates such a circuit-breaker; 2)
warning markings give notice of the potential HAZARD and a lamp indicates the presence of the HAZARD (symbol 12 of Table 1); 3) conveyor belts, muffles, etc. which are conductive are connected to the PROTECTIVE CONDUCTOR TERMINAL; 4) the instructions for use state that it is necessary for the OPERATOR to be protected against electric shock, including electric shock resulting from the possibility of simultaneous contact with HAZARDOUS LIVE parts and parts connected to the PROTECTIVE CONDUCTOR TERMINAL, and indicate the means of protection. These protective means may include one or more of the following: i) insulated TOOLS; SIST EN 61010-2-010:2015
IEC 61010-2-010:2014 © IEC 2014 – 11 – ii) insulating clothing; iii) standing on an insulating surface; iv) shrouding of parts connected to the PROTECTIVE CONDUCTOR TERMINAL with which the OPERATOR might come into contact in NORMAL USE. Conformity is checked by inspection. 6.3.1 b) 1) Current Addition: Levels for PERMANENTLY CONNECTED EQUIPMENT are 1,5 times the above values. 6.3.2 b) 1) Current
Addition: Levels for PERMANENTLY CONNECTED EQUIPMENT are 1,5 times the above values. 6.7.2.2 Solid insulation Additional subclause: 6.7.2.2.101 Drying Out Time If the performance requirements of the equipment cannot be achieved without the use of hygroscopic heater insulation it is permissible for equipment to require a period of operation to dry out the insulation before meeting the requirements of 6.7.2.2, 6.3.1 and 6.8.2 providing the operator is made aware of this (see 5.4.3.101). Conformity is checked by performing the drying out process specified in the user manual (see 5.4.3.101) before conducting the tests of 6.3.1 and 6.8.2 6.8.2 Humidity preconditioning Addition: If a drying-out process is specified (see 6.7.2.2.101), this is carried out in accordance with the operator manual (see 5.4.3.101) before the tests of 6.8.3. Drying-out is followed by a rest period of 2 h with the equipment de-energized. The tests are then performed and completed within 1 h of the end of the rest period. If there is doubt whether the equipment would pass a particular test at maximum operating temperature, then that test is repeated at maximum operating temperature. Equipment for which a drying-out period is specified (see 5.4.3.101) shall not be subjected to humidity preconditioning. 6.9.2 Insulating materials Addition before the conformity statement: NOTE Although ceramics can provide satisfactory electrical insulation at ambient temperature, their insulating properties are reduced at high temperatures. This is not only because they are susceptible to progressive mechanical deterioration, but also because they can become electrically conductive at high temperatures and in NORMAL USE can be contaminated by conductive material. 6.10.1 MAINS supply cords SIST EN 61010-2-010:2015
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Addition to the third paragraph: Alternatively, additional protection shall be provided to prevent the cord from contacting the hot s
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